Nowadays more and more cell phone towers are being built in many different states across the US. Some people like it, others don't. As I can guess from your question, you are with the second group. And if you don't like that more cell phone towers would appear near your living area, you want to protect your family against them.

First of all, you can't say that you will "block the cell phone tower". What may be done for real is the blocking of the signal coming to this tower, yet to block all incoming mobile phone signals you need to use really powerful jammers that can deal with such kind of strong mobile phone signal flow.

I hope this information would help you to solve your problem, at least partially :)

I can recommend you to use KBJ-70 powerful desktop cell phone jammer within your house to prevent the signal from the cell phone tower from reaching there. If you want to block the tower itself, you need to put this jammer near it and hope that it will overpower its signal. If not then you need to use more jammers.